#VU102155 Improper locking in Linux kernel - CVE-2024-56709

Vulnerability identifier: #VU102155

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56709

CWE-ID: CWE-667

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the io_queue_iowq() function in io_uring/io_uring.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/2ca94c8de36091067b9ce7527ae8db3812d38781
https://git.kernel.org/stable/c/4f95a2186b7f2af09331e1e8069bcaf34fe019cf
https://git.kernel.org/stable/c/534d59ab38010aada88390db65985e65d0de7d9e
https://git.kernel.org/stable/c/dbd2ca9367eb19bc5e269b8c58b0b1514ada9156

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.